Suppression of intensity fluctuation of a longitudinal mode in directly modulated GaInAsP/InP dynamic single-mode laser

1983 ◽  
Vol 19 (9) ◽  
pp. 325 ◽  
Author(s):  
F. Koyama ◽  
T. Tanbun-Ek ◽  
S. Arai ◽  
S. Wang ◽  
Y. Suematsu ◽  
...  
Keyword(s):  
Intensity Fluctuation ◽  
Longitudinal Mode ◽  
Single Mode ◽  
Mode Laser ◽  
Single Mode Laser

EFFECTS OF CORRELATION BETWEEN REAL AND IMAGINARY PARTS OF THE QUADRATIC PUMP NOISE ON THE INTENSITY FLUCTUATION OF A SINGLE-MODE LASER SYSTEM

2009 ◽  
Vol 23 (02) ◽  
pp. 155-161
Author(s):  
G. H. ZHAO ◽  
Y. L. XIANG ◽  
D. C. MEI
Keyword(s):  
Correlation Function ◽  
Relaxation Time ◽  
Intensity Fluctuation ◽  
Laser System ◽  
Single Mode ◽  
Intensity Correlation ◽  
Mode Laser ◽  
The Real ◽  
Single Mode Laser ◽  
Intensity Correlation Function

The effects of the correlations between real and imaginary parts of the quadratic pump noise on the normalized intensity correlation function and the associated relaxation time of a single-mode laser model were investigated. The expressions of the intensity correlation function C(s) and the relaxation time Tc were derived. Based on numerical computations, we found that Tc monotonously increases as the strength λp of correlation between the real and imaginary parts of quadratic pump noise increases and the larger λp value is, the slower C(s) decays. The presence of correlations between the real and imaginary parts of the quadratic pump noise causes the intensity fluctuation to increase.

scholarly journals A Stable 1550nm WGM Laser Generated by Yb3+/Er3+ Co-doped Silica Microspheres under μm ASE Source Pumping

2021 ◽  
Vol 2112 (1) ◽  
pp. 012013
Author(s):  
Qiling Xu ◽  
Senlin Peng ◽  
Tingdi Liao ◽  
Yantang Huang
Keyword(s):  
Temperature Change ◽  
Light Source ◽  
Tunable Laser ◽  
Longitudinal Mode ◽  
Single Mode ◽  
Mode Laser ◽  
Single Mode Laser ◽  
Pump Source ◽  
Actual Application ◽  
Co Doped

Abstract The amplified spontaneous emission (ASE) light source at 1 μm was used to excite Yb3+/Er3+ co-doped silica (YEDS) microspheres by evanescent-wave coupling through a taper optical fiber (TOF) to generate a stable 1550 nm laser. Inevitably, the experimental process was accompanied by a frequency up-conversion luminescence whose fluorescence spectrum was collected and analyzed. Pumped by the ASE light source with different power, the system of YEDS microsphere and TOF also generated single-mode laser and multi-longitudinal mode laser. Their peak wavelength, output power of the peak laser, full width at half maximum (FWHM), and side mode suppression ratio (SMSR) were respectively measured. Moreover, the characteristics of a 1550 nm whispering gallery mode (WGM) laser excited by a 1 μm ASE pumping and a tunable laser (TLS) pumping were compared under different variable conditions. It was demonstrated that the ASE pump source has polarization in all directions to excite WGMs in the microsphere cavity, which was different from and superior to the TLS. Therefore, the laser generated by the ASE pump source as an excitation source was not affected by vibration and temperature change. The results show that the 1550 nm laser pumped by ASE can stably output the microsphere WGM mode laser under the interference of vibration and temperature change, which is more suitable for the actual application environment.

Coherent summation of the radiation of a single-mode laser diode array

2012 ◽  
Vol 42 (6) ◽  
pp. 561-564 ◽  
Author(s):  
S I Derzhavin ◽  
O A Dyukel' ◽  
N M Lyndin
Keyword(s):  
Laser Diode ◽  
Single Mode ◽  
Diode Array ◽  
Laser Diode Array ◽  
Mode Laser ◽  
Single Mode Laser
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